Partial thromboplastin time (PTT) clotting test in Riverside-San Bernardino-Ontario, CA — inpatient
In Riverside-San Bernardino-Ontario, CA, 9 hospitals list a cash price for Partial thromboplastin time (PTT) clotting test as an inpatient: from $21.60 to $447.34, with a median of $82.80. The lowest listed price is at St Mary Medical Center.
Cash prices at 9 facilities across 8 cities for code 85730, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 2, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Riverside-San Bernardino-Ontario, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| St Mary Medical Center lowest Apple Valley, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD CDM | $21.60 | $45.00 | 52% | Apr 1, 2026 source file |
| St Mary Medical Center Apple Valley, CA HC THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD LAB | $33.45 | $69.68 | 52% | Apr 1, 2026 source file |
| St Mary Medical Center Apple Valley, CA HC THROMBOPLASTIN TIME PARTIAL | $71.85 | $149.69 | 52% | Apr 1, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC SLOW ACTIVATION | $72.90 | $162.00 | 55% | Aug 31, 2026 source file |
| Loma Linda University Medical Center Loma Linda, CA HC SLOW ACTIVATION | $72.90 | $162.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA HC SLOW ACTIVATION | $72.90 | $162.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA HC SLOW ACTIVATION | $72.90 | $162.00 | 55% | Sep 2, 2026 source file |
| Palo Verde Hospital Blythe, CA PTT, Activated | $81.00 | $108.00 | 25% | Jul 1, 2026 source file |
| Loma Linda University Medical Center Loma Linda, CA HC PTT | $82.80 | $184.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA HC LUPUS SCREEN PTT | $82.80 | $184.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA HC PTT | $82.80 | $184.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center Loma Linda, CA HC LUPUS SCREEN PTT | $82.80 | $184.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC LUPUS SCREEN PTT | $82.80 | $184.00 | 55% | Aug 31, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC PTT | $82.80 | $184.00 | 55% | Aug 31, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA HC LUPUS SCREEN PTT | $82.80 | $184.00 | 55% | Sep 2, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA HC PTT | $82.80 | $184.00 | 55% | Sep 2, 2026 source file |
| Palo Verde Hospital Blythe, CA Vancomycin Level Trough | $105.00 | $140.00 | 25% | Jul 1, 2026 source file |
| Kaiser Foundation Hospital - Fontana Fontana, CA THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD | $111.28 | $214.00 | 48% | — source file |
| Kaiser Foundation Hospital - Riverside Riverside, CA THROMBOPLASTIN TIME PARTIAL PLASMA/WHOLE BLOOD | $111.28 | $214.00 | 48% | — source file |
| Riverside University Medical Center Moreno Valley, CA HC Ptt Plasma or Whole Blood | $447.34 | $447.34 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA HC Ptt Plasma or Whole Blood | $447.34 | $447.34 | — | — source file |
Inpatient: lowest $21.60, median $82.80, highest $447.34 — a 20.7× difference within the same market.
As an outpatient, the same code is billed by 14 facilities here, median $82.80 — that is the price to compare if you are not being admitted.
What it is
The partial thromboplastin time (PTT or aPTT) test measures how long it takes blood to clot through a different pathway than the PT test. It is used to check for bleeding disorders, before surgery, and to monitor heparin.
What the price covers
The price usually covers the PTT test. The blood draw is often billed separately.
4 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 85730 ($48.56). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Riverside University Medical Center Moreno Valley, CAHC Qu Partial Thromboplastin Time | $4.14 | file |
| Riverside University Medical Center Moreno Valley, CAHC Qu Partial Thromboplastin Time | $4.14 | file |
| Riverside University Medical Center Moreno Valley, CAHC Qu Lupus Anti Rfl Ptt Ppnl | $4.84 | file |
| Riverside University Medical Center Moreno Valley, CAHC Qu Lupus Anti Rfl Ptt Ppnl | $4.84 | file |